Adobe Premiere Pro CS6 - Manual (Page 382)

3. Do any of the following:
To change the duration without changing the speed of the selected clips, click the gang button so that it shows a broken link .
Unganging also allows you to change the speed without changing the duration.
The speed remains at the percentage set while you trim the clip or clips. Alternatively, the duration remains at the percentage set while
you change the speed of the clip or clips.
To play the clips backward, check Reverse Speed.
To keep the audio at its current pitch while the speed or duration changes, check Maintain Audio Pitch.
To keep the clips following the changing clips adjacent to them, click Ripple Edit, Shifting Trailing Clips. (This option is available only
when changing the speed or duration of clips in a Timeline panel.)
4. Click OK.
Chad Perkins and Lynda.com provides a video tutorial detailing how to change the speed of a clip in Premiere Pro CS5.
Change clip speed and duration with the Rate Stretch tool
You can change a clip’s speed to fit a duration.
Select the Rate Stretch tool , and drag either edge of a clip in a Timeline panel.
Changing clip speed using the Rate Stretch tool
See this video tutorial by Andrew Devis on the razor and rate stretch tools.
Author Phil Hawkins also shows how to use the Rate Stretch tool in this Premiere CS5 tutorial video at Infinite Skills.
Change clip speed and duration with Time Remapping
You can change the speed of the video portion of a whole clip. You can use Time Remapping to create slow motion and fast motion effects in
which the rate of speed varies.
1. In the track header of the video track containing the desired clip, click the Show Keyframes button. If it is not selected, select Show
Keyframes.
2. Click the Clip Effect menu triangle, and choose Time Remapping > Speed. (The Clip Effect menu triangle appears next to the filename of
every clip in a video track. If it is hard to see, zoom in to make enough room in the clip to display it.)
A horizontal rubber band that controls the speed of the clip appears across the center of the clip.
3. Drag the rubber band upward or downward to increase or decrease the speed of the clip. A tool tip appears showing the change in speed as
a percentage of the original speed.
The playback speed of the video portion of the clip changes and its duration expands or contracts depending on whether its speed is increased or
decreased. The audio portion of the clip remains unchanged by Time Remapping, although it remains linked to the video portion.
Note: When you lengthen a clip in a sequence by slowing its speed, it will not overwrite an adjacent clip. Instead, the clip expands until it touches
the edge of the adjacent clip. Adobe Premiere Pro then pushes remaining frames into the tail of the lengthened clip. To recover these frames,
create a gap after the clip and trim its right edge to reveal them.
Franklin McMahon provides a video tutorial demonstrating time remapping on the Layers Magazine website.
Vary changes to speed or direction with Time Remapping
You can speed up, slow down, play backward, or freeze video portions of a clip using the Time Remapping effect. Using speed keyframes, you
can change speed numerous times within the same clip. Take a clip of a man walking, for example. You can show him moving forward quickly,
slowing suddenly, stopping mid-step, and even walking backward, before resuming his forward motion. Unlike Clip Speed/Duration which applies a
constant speed across the entire clip, Time Remapping allows you to vary the speed throughout the clip. Also, you can ease in or ease out speed
changes.
You can apply time remapping only to instances of clips in a Timeline panel, not to master clips.
When you vary the speed of a clip with linked audio and video, the audio remains linked to the video, but remains at 100% speed. The audio does
not remain synchronized with the video.
You create variable speed changes by applying speed keyframes. You can apply speed keyframes in the Effect Controls panel, or in a clip in a
Timeline panel. Applying speed keyframes in either location is like keyframing Motion, Opacity, or any other keyframe effect, with one notable
difference: a speed keyframe can be split to create a transition between two different playback speeds. When first applied to a track item, any
change in playback speed on either side of a speed keyframe is instantaneous at that frame. When the speed keyframe is dragged apart and
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